福建农业学报2012，Vol.27Issue(9)：982-988,7.
福建冬种马铃薯氮磷钾施肥指标研究
Nitrogen,Phosphorus and Potassium Fertilization for Winter Potatoes in Fujian
摘要
Abstract
This paper established a fertilization index of N, P and K for wintertime potato based on 110 field experiments on the fertilizer efficiencies of N, P and K in main produce areas of Fujian in recent years. Results showed that applied NPK fertilizers may get significant increasing yield that were by 29. 4% , 12. 8% and 19. 1% respectively, and theirs average efficiencies was N>K>P. There were linear relationship between yield of CK and yield of balanced fertilization. High yield critical value of soil alkali-hydrolyzable N, Olsen-P and available K were 261 mg · kg-1 、 55 mg · kg-1 and 123 mg · kg-1 respectively. Economic application rate on potato were N225 kg · hm-2、 P2O588 kg · hm-2and K2O 198 kg · hm-1 on average respectively. However, the optimum application rates in different soil fertility grades were different. Relationship between soil available NPK testing value and optimum application rate satisfied exponential model and the model realized intention that fertilization recommendation for plot according to soil testing. 28 comparative trials showed that average increasing yield was by 8. 3% and net income was by 1429 Yuan · hm-1 in recommendation fertilization compared with farmers practice. The results provided scientific foundation for highly effective fertilization on wintertime potato production in Fujian.关键词
马铃薯/氮磷钾/丰缺指标/推荐施肥Key words
potato/ NPK/ critical index/ fertilization recommendation分类
农业科技引用本文复制引用
章明清,姚宝全,李娟,孔庆波,陈燕花..福建冬种马铃薯氮磷钾施肥指标研究[J].福建农业学报,2012,27(9):982-988,7.基金项目
国际植物营养研究所合作项目(Fujian-10) （Fujian-10）
福建省财政专项——福建省农业科学院科技创新团队建设基金(Y015-4) （Y015-4）
国家测土配方施肥补贴项目(2005-2011) （2005-2011）
